Embodiments of the invention are directed to systems, methods and computer program products for routing traffic in a packet data network (pdn). A method includes determining whether the mobile device has an active long-lived data traffic session over an original pdn connection between the mobile device and a first pdn gateway (P-GW); if the mobile device has an active long-lived data traffic session, then routing any new long-lived data traffic session over the original pdn connection; and if the mobile device does not have an active long-lived data traffic session, then routing any new long-lived data traffic session over a location-based pdn connection established based at least in part on a current location of the mobile device. In other words, the mobile device initiates and maintains all long-lived data sessions (for which service continuity is essential) to only one pdn connection.
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1. A method for routing traffic in a packet data network (pdn), the method comprising:
determining, by a mobile device, whether the mobile device has an active data traffic session that requires network service continuity over an original pdn connection between the mobile device and a first pdn gateway (P-GW);
if the mobile device has an active data traffic session that requires network service continuity, then routing any new data traffic session that requires network service continuity over the original pdn connection; and
if the mobile device does not have an active data traffic session that requires network service continuity, then routing any new data traffic session that requires network service continuity over a location-based pdn connection established based at least in part on a current location of the mobile device.
12. A mobile device comprising:
a memory;
a processor; and
a module stored in the memory for routing traffic in a packet data network (pdn), the module executable by the processor, and configured to:
determine whether the mobile device has an active data traffic session that requires network service continuity over an original pdn connection between the mobile device and a first pdn gateway (P-GW);
if the mobile device has an active data traffic session that requires network service continuity, then route any new data traffic session that requires network service continuity over the original pdn connection; and
if the mobile device does not have an active data traffic session that requires network service continuity, then route any new data traffic session that requires network service continuity over a location-based pdn connection established based at least in part on a current location of the mobile device.
17. A computer program product for routing traffic in a packet data network (pdn), the computer program product comprising:
a non-transitory computer-readable medium comprising a set of codes for causing a computer to:
determine whether the mobile device has an active data traffic session that requires network service continuity over an original pdn connection between the mobile device and a first pdn gateway (P-GW);
if the mobile device has an active data traffic session that requires network service continuity, then route any new data traffic session that requires network service continuity over the original pdn connection; and
if the mobile device does not have an active data traffic session that requires network service continuity, then route any new data traffic session that requires network service continuity over a location-based pdn connection established based at least in part on a current location of the mobile device.
2. The method of
determining, by the mobile device, location information including location data indicating the current location of the mobile device;
determining, by the mobile device, a second pdn gateway (P-GW) corresponding to the determined current location of the mobile device;
determining, by the mobile device, that an active data traffic session that is not dependent on network service continuity over the original pdn connection exists;
initiating connecting, by the mobile device, the mobile device to the second P-GW, thereby resulting in the location-based pdn connection; and
re-routing the active data traffic session that is not dependent on network service continuity over the location-based pdn connection.
3. The method of
as long as the mobile device has an active data traffic session that requires network service continuity over the original pdn connection, routing, by the mobile device, any new data traffic session that requires network service continuity over the original pdn connection.
4. The method of
determining, by the mobile device, location information including location data indicating the current location of the mobile device;
determining, by the mobile device, a second pdn gateway (P-GW) corresponding to the determined current location of the mobile device;
determining, by the mobile device, that a data traffic session that is not dependent on network service continuity over the cellular network will be initiated by the mobile device within a period of time;
initiating connecting, by the mobile device, the mobile device to the second P-GW, thereby resulting in the location-based pdn connection; and
routing the data traffic session that is not dependent on network service continuity over the location-based pdn connection.
5. The method of
as long as the mobile device has an active data traffic session that requires network service continuity over the original pdn connection, routing, by the mobile device, any new data traffic session that requires network service continuity over the original pdn connection.
6. The method of
determining, by the mobile device, that the mobile device does have an active data traffic session that requires network service continuity over the original pdn connection;
determining, by the mobile device, that a new data traffic session that requires network service continuity will be initiated by the mobile device within a second period of time; and
in response to determining that the new data traffic session that requires network service continuity will be initiated and that the mobile device has an active data traffic session that requires network service continuity over the original pdn connection, routing the new data traffic session that requires network service continuity over the original pdn connection.
7. The method of
determining, by the mobile device, second location information including location data indicating a second current location of the mobile device;
determining, by the mobile device, a third pdn gateway (P-GW) corresponding to the determined second current location of the mobile device;
determining, by the mobile device, that a second data traffic session that is not dependent on network service continuity over the cellular network will be initiated by the mobile device within a third period of time;
initiating connecting, by the mobile device, the mobile device to the third P-GW, thereby resulting in a second location-based pdn connection; and
routing the second data traffic session that is not dependent on network service continuity over the second location-based pdn connection.
8. The method of
re-routing the data traffic session that is not dependent on network service continuity over the second location-based pdn connection; and
disconnecting, by the mobile device, from the second P-GW, thereby ending the location-based pdn connection.
9. The method of
determining, by the mobile device, that both the active data traffic session that requires network service continuity and the new data traffic session that requires network service continuity have been terminated; and
disconnecting, by the mobile device, from the first P-GW, thereby ending the original pdn connection.
10. The method of
routing, by the mobile device, any new data traffic session that requires network service continuity or data traffic session that is not dependent on network service continuity over the second location-based pdn connection.
11. The method of
as long as the mobile device has an active data traffic session that requires network service continuity over the original pdn connection, routing, by the mobile device, any new data traffic session that requires network service continuity over the original pdn connection.
13. The mobile device of
determine location information including location data indicating the current location of the mobile device;
determine a second pdn gateway (P-GW) corresponding to the determined current location of the mobile device;
determine that an active data traffic session that is not dependent on network service continuity over the original pdn connection exists;
initiate connecting the mobile device to the second P-GW, thereby resulting in the location-based pdn connection; and
re-route the active data traffic session that is not dependent on network service continuity over the location-based pdn connection.
14. The mobile device of
as long as the mobile device has an active data traffic session that requires network service continuity over the original pdn connection, routing, by the mobile device, any new data traffic session that requires network service continuity over the original pdn connection.
15. The mobile device of
determine location information including location data indicating the current location of the mobile device;
determine a second pdn gateway (P-GW) corresponding to the determined current location of the mobile device;
determine that a data traffic session that is not dependent on network service continuity over the cellular network will be initiated by the mobile device within a period of time;
initiate connecting the mobile device to the second P-GW, thereby resulting in the location-based pdn connection; and
route the data traffic session that is not dependent on network service continuity over the location-based pdn connection.
16. The mobile device of
as long as the mobile device has an active data traffic session that requires network service continuity over the original pdn connection, route any new data traffic session that requires network service continuity over the original pdn connection.
18. The computer program product of
determine location information including location data indicating the current location of the mobile device;
determine a second pdn gateway (P-GW) corresponding to the determined current location of the mobile device;
determine that an active data traffic session that is not dependent on network service continuity over the original pdn connection exists;
initiate connecting the mobile device to the second P-GW, thereby resulting in the location-based pdn connection; and
re-route the active data traffic session that is not dependent on network service continuity over the location-based pdn connection.
19. The computer program product of
as long as the mobile device has an active data traffic session that requires network service continuity over the original pdn connection, routing, by the mobile device, any new data traffic session that requires network service continuity over the original pdn connection.
20. The computer program product of
determine location information including location data indicating the current location of the mobile device;
determine a second pdn gateway (P-GW) corresponding to the determined current location of the mobile device;
determine that a data traffic session that is not dependent on network service continuity over the cellular network will be initiated by the mobile device within a period of time;
initiate connecting the mobile device to the second P-GW, thereby resulting in the location-based pdn connection;
route the data traffic session that is not dependent on network service continuity over the location-based pdn connection; and
as long as the mobile device has an active data traffic session that requires network service continuity over the original pdn connection, route any new data traffic session that requires network service continuity over the original pdn connection.
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In modern cellular networks, both short-lived (e.g., web browsing) and long-lived (e.g., VoLTE call, streaming, etc.) data traffic sessions (i.e., flows) may be routed to a particular packet data network (PDN) gateway (P-GW) and then re-routed to a new P-GW as the user equipment (UE) such as a user mobile device when the UE moves between different cluster areas. However, re-routing long-lived flows is typically impossible as they require service continuity. Further, establishing new connections to new P-GWs as the UE travels from cluster to cluster may result in new long-lived (and short-lived flows) being routed to multiple different P-GWs.
Embodiments of the invention are directed to systems, methods and computer program products for routing traffic in a packet data network (PDN). A method includes determining, by a mobile device, whether the mobile device has an active long-lived data traffic session over an original PDN connection between the mobile device and a first PDN gateway (P-GW); if the mobile device has an active long-lived data traffic session, then routing any new long-lived data traffic session over the original PDN connection; and if the mobile device does not have an active long-lived data traffic session, then routing any new long-lived data traffic session over a location-based PDN connection established based at least in part on a current location of the mobile device.
In some embodiments, the method includes determining, by the mobile device, location information including location data indicating the current location of the mobile device; determining, by the mobile device, a second PDN gateway (P-GW) corresponding to the determined current location of the mobile device; determining, by the mobile device, that an active short-lived data traffic session over the original PDN connection exists; initiating connecting, by the mobile device, the mobile device to the second P-GW, thereby resulting in the location-based PDN connection; and re-routing the active short-lived data traffic session over the location-based PDN connection. In some such embodiments, the method also includes, as long as the mobile device has an active long-lived data traffic session over the original PDN connection, routing, by the mobile device, any new long-lived data traffic session over the original PDN connection.
In some embodiments, the method includes determining, by the mobile device, location information including location data indicating the current location of the mobile device; determining, by the mobile device, a second PDN gateway (P-GW) corresponding to the determined current location of the mobile device; determining, by the mobile device, that a short-lived data traffic session over the cellular network will be initiated by the mobile device within a period of time; initiating connecting, by the mobile device, the mobile device to the second P-GW, thereby resulting in the location-based PDN connection; and routing the short-lived data traffic session over the location-based PDN connection. In some such embodiments, the method also includes, as long as the mobile device has an active long-lived data traffic session over the original PDN connection, routing, by the mobile device, any new long-lived data traffic session over the original PDN connection.
In other such embodiments, the method includes determining, by the mobile device, that the mobile device does have an active long-lived data traffic session over the original PDN connection; determining, by the mobile device, that a new long-lived data traffic session will be initiated by the mobile device within a second period of time; and, in response to determining that the new long-lived data traffic session will be initiated and that the mobile device has an active long-lived data traffic session over the original PDN connection, routing the new long-lived data traffic session over the original PDN connection. In some of these embodiments, the method also includes determining, by the mobile device, second location information including location data indicating a second current location of the mobile device; determining, by the mobile device, a third PDN gateway (P-GW) corresponding to the determined second current location of the mobile device; determining, by the mobile device, that a second short-lived data traffic session over the cellular network will be initiated by the mobile device within a third period of time; initiating connecting, by the mobile device, the mobile device to the third P-GW, thereby resulting in a second location-based PDN connection; and routing the second short-lived data traffic session over the second location-based PDN connection. In some of these embodiments, the method also includes re-routing the short-lived data traffic session over the second location-based PDN connection; and disconnecting, by the mobile device, from the second P-GW, thereby ending the location-based PDN connection. In some such embodiments, the method also includes determining, by the mobile device, that both the active long-lived data traffic session and the new long-lived data traffic session have been terminated; and disconnecting, by the mobile device, from the first P-GW, thereby ending the original PDN connection. In some of these embodiments, the method also includes routing, by the mobile device, any new long-lived data traffic session or short-lived data traffic session over the second location-based PDN connection.
In some embodiments, the method also includes, as long as the mobile device has an active long-lived data traffic session over the original PDN connection, routing, by the mobile device, any new long-lived data traffic session over the original PDN connection.
According to embodiments of the invention, a mobile device includes a memory; a processor; and a module stored in the memory for routing traffic in a packet data network (PDN), the module executable by the processor, and configured to determine whether the mobile device has an active long-lived data traffic session over an original PDN connection between the mobile device and a first PDN gateway (P-GW); if the mobile device has an active long-lived data traffic session, then route any new long-lived data traffic session over the original PDN connection; and if the mobile device does not have an active long-lived data traffic session, then route any new long-lived data traffic session over a location-based PDN connection established based at least in part on a current location of the mobile device.
In some embodiments, the module is further configured to determine location information including location data indicating the current location of the mobile device; determine a second PDN gateway (P-GW) corresponding to the determined current location of the mobile device; determine that an active short-lived data traffic session over the original PDN connection exists; initiate connecting the mobile device to the second P-GW, thereby resulting in the location-based PDN connection; and re-route the active short-lived data traffic session over the location-based PDN connection. In some of these embodiments, the module is further configured to, as long as the mobile device has an active long-lived data traffic session over the original PDN connection, routing, by the mobile device, any new long-lived data traffic session over the original PDN connection.
In some embodiments, the module is further configured to determine location information including location data indicating the current location of the mobile device; determine a second PDN gateway (P-GW) corresponding to the determined current location of the mobile device; determine that a short-lived data traffic session over the cellular network will be initiated by the mobile device within a period of time; initiate connecting the mobile device to the second P-GW, thereby resulting in the location-based PDN connection; route the short-lived data traffic session over the location-based PDN connection; and, as long as the mobile device has an active long-lived data traffic session over the original PDN connection, route any new long-lived data traffic session over the original PDN connection.
According to embodiments of the invention, a computer program product for routing traffic in a packet data network (PDN) includes a non-transitory computer-readable medium comprising a set of codes for causing a computer to determine whether the mobile device has an active long-lived data traffic session over an original PDN connection between the mobile device and a first PDN gateway (P-GW); if the mobile device has an active long-lived data traffic session, then route any new long-lived data traffic session over the original PDN connection; and, if the mobile device does not have an active long-lived data traffic session, then route any new long-lived data traffic session over a location-based PDN connection established based at least in part on a current location of the mobile device.
In some embodiments, the set of codes further causes a computer to determine location information including location data indicating the current location of the mobile device; determine a second PDN gateway (P-GW) corresponding to the determined current location of the mobile device; determine that an active short-lived data traffic session over the original PDN connection exists; initiate connecting the mobile device to the second P-GW, thereby resulting in the location-based PDN connection; and re-route the active short-lived data traffic session over the location-based PDN connection. In some such embodiments, the set of codes further causes a computer to, as long as the mobile device has an active long-lived data traffic session over the original PDN connection, routing, by the mobile device, any new long-lived data traffic session over the original PDN connection.
In some embodiments, the set of codes further causes a computer to determine location information including location data indicating the current location of the mobile device; determine a second PDN gateway (P-GW) corresponding to the determined current location of the mobile device; determine that a short-lived data traffic session over the cellular network will be initiated by the mobile device within a period of time; initiate connecting the mobile device to the second P-GW, thereby resulting in the location-based PDN connection; route the short-lived data traffic session over the location-based PDN connection; and, as long as the mobile device has an active long-lived data traffic session over the original PDN connection, route any new long-lived data traffic session over the original PDN connection.
Having thus described embodiments of the invention in general terms, reference will now be made to the accompanying drawings, where:
Embodiments of the present invention now may be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all, embodiments of the invention are shown. Indeed, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure may satisfy applicable legal requirements. Like numbers refer to like elements throughout.
The Selective IP Traffic Offload (SIPTO) feature defined in 3GPP Rel10 specifications allows the operator to re-establish a packet data network (PDN) connection to a new PDN gateway (P-GW) that is geographically closer to the current UE location. By engaging this SIPTO feature, the user may optimize the load balancing of the network. The SIPTO feature releases or ends the original PDN connection and establishes a new PDN connection to the same PDN. However, the use of a new P-GW (typically geography based) results in assignment of a new IP address. This means that IP address continuity is broken and any ongoing IP services may be disrupted. Further, changing the IP address has differing effects on short-lived flows versus long-lived flows. Regarding short-lived flows, the user may not notice a change, but regarding long-lived flows, the effect may be a poor user experience such as the user being disconnected from a session such as a VoLTE call or data streaming session.
One solution to these problems is to establish a new PDN connection to the new P-GW that is geographically proximate the UE, while keeping the original PDN connection to the original P-GW active. In such a scenario, all new flows are routed to the new PDN connection, while the existing long-lived flows remain routed through the original PDN connection to the original P-GW. Retaining routing for the original long-lived flows ensures service continuity for the long-lived flows. The PDN connection to the original P-GW is released only when all the long-lived flows routed through the original PDN connection have expired. However, one drawback to this solution is that all new flows are routed through the new PDN connection to the new P-GW regardless of whether the flow is short-lived or long-lived. This results in multiple PDN connections to multiple P-DWs while the UE may be moving between multiple different cluster areas. Further any new long-lived flow may be started and routed to a different P-GW and PDN connection.
In order to overcome such deficiencies, all new long-lived flows that require IP address continuity may be routed to only one PDN connection. Thus, the UE will never route any long-lived flow to more than one P-GW while moving among several cluster areas.
Embodiments of the invention are directed to systems, methods and computer program products for routing traffic in a packet data network (PDN). A method includes determining whether the mobile device has an active long-lived data traffic session over an original PDN connection between the mobile device and a first PDN gateway (P-GW); if the mobile device has an active long-lived data traffic session, then routing any new long-lived data traffic session over the original PDN connection; and if the mobile device does not have an active long-lived data traffic session, then routing any new long-lived data traffic session over a location-based PDN connection established based at least in part on a current location of the mobile device. In other words, the mobile device initiates and maintains all long-lived data sessions (for which service continuity is essential) to only one PDN connection. Accordingly, embodiments of the invention may effectively reduce cost and better maintain resources in the network.
In some embodiments, the UE and/or network receive and/or determine location information associated with a UE. The location information may include current location data indicating the location of the UE, speed data indicating a current speed of the UE and movement direction data indicating a current direction of movement of the UE. The UE and/or network may determine a location of the mobile device based on the location information, and determine a cluster and its corresponding P-GW based on the determined location of the UE.
Referring now to
Referring now to
The network 201 may be a global area network (GAN), such as the Internet, a wide area network (WAN), a local area network (LAN), a telecommunication network or any other type of network or combination of networks. The network 201 may provide for wireline, wireless, or a combination wireline and wireless communication between devices on the network 201.
In some embodiments, the users 202 and 205 are individuals who maintain cellular products with one or more providers.
As illustrated in
The processing device 248 is operatively coupled to the communication device 246 and the memory device 250. The processing device 248 uses the communication device 246 to communicate with the network 201 and other devices on the network 201. As such, the communication device 246 generally comprises a modem, server, or other device for communicating with other devices on the network 201.
As further illustrated in
As illustrated in
As further illustrated in
It is understood that the servers, systems, and devices described herein illustrate one embodiment of the invention. It is further understood that one or more of the servers, systems, and devices can be combined in other embodiments and still function in the same or similar way as the embodiments described herein.
Referring now to
The overarching method steps described with reference to
Referring now to
Referring specifically to
For example, when a UE travels from one cluster to another cluster, as described above with reference to
Referring now to
Referring back to
Then, the user moves from Cluster B to Cluster C while riding on the train. The UE then establishes a third PDN connection to P-GW3, but maintains the conference call and the streaming session on the original PDN connection through S-GW-3 and P-GW1. However, the UE moves all new (and in some embodiments existing) short-lived flows from S-GW2/P-GW2 to S-GW3/P-GW3. The UE releases the PDN connection through P-GW2.
Once the user ends both the conference call and the streaming session, the UE releases the PDN connection through P-GW1. Any subsequent long-lived flows would then be connected through S-GW3/P-GW3 (or whatever PDN gateway corresponds to the location of the UE).
One or more of the periods of time referred to herein may be predetermined periods of time.
Although many embodiments of the present invention have just been described above, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Also, it will be understood that, where possible, any of the advantages, features, functions, devices, and/or operational aspects of any of the embodiments of the present invention described and/or contemplated herein may be included in any of the other embodiments of the present invention described and/or contemplated herein, and/or vice versa. In addition, where possible, any terms expressed in the singular form herein are meant to also include the plural form and/or vice versa, unless explicitly stated otherwise. As used herein, “at least one” shall mean “one or more” and these phrases are intended to be interchangeable. Accordingly, the terms “a” and/or “an” shall mean “at least one” or “one or more,” even though the phrase “one or more” or “at least one” is also used herein. Like numbers refer to like elements throughout.
As will be appreciated by one of ordinary skill in the art in view of this disclosure, the present invention may include and/or be embodied as an apparatus (including, for example, a system, machine, device, computer program product, and/or the like), as a method (including, for example, a business method, computer-implemented process, and/or the like), or as any combination of the foregoing. Accordingly, embodiments of the present invention may take the form of an entirely business method embodiment, an entirely software embodiment (including firmware, resident software, micro-code, stored procedures in a database, etc.), an entirely hardware embodiment, or an embodiment combining business method, software, and hardware aspects that may generally be referred to herein as a “system.” Furthermore, embodiments of the present invention may take the form of a computer program product that includes a computer-readable storage medium having one or more computer-executable program code portions stored therein. As used herein, a processor, which may include one or more processors, may be “configured to” perform a certain function in a variety of ways, including, for example, by having one or more general-purpose circuits perform the function by executing one or more computer-executable program code portions embodied in a computer-readable medium, and/or by having one or more application-specific circuits perform the function.
It will be understood that any suitable computer-readable medium may be utilized. The computer-readable medium may include, but is not limited to, a non-transitory computer-readable medium, such as a tangible electronic, magnetic, optical, electromagnetic, infrared, and/or semiconductor system, device, and/or other apparatus. For example, in some embodiments, the non-transitory computer-readable medium includes a tangible medium such as a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), a compact disc read-only memory (CD-ROM), and/or some other tangible optical and/or magnetic storage device. In other embodiments of the present invention, however, the computer-readable medium may be transitory, such as, for example, a propagation signal including computer-executable program code portions embodied therein.
One or more computer-executable program code portions for carrying out operations of the present invention may include object-oriented, scripted, and/or unscripted programming languages, such as, for example, Java, Perl, Smalltalk, C++, SAS, SQL, Python, Objective C, JavaScript, and/or the like. In some embodiments, the one or more computer-executable program code portions for carrying out operations of embodiments of the present invention are written in conventional procedural programming languages, such as the “C” programming languages and/or similar programming languages. The computer program code may alternatively or additionally be written in one or more multi-paradigm programming languages, such as, for example, F#.
Some embodiments of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of apparatus and/or methods. It will be understood that each block included in the flowchart illustrations and/or block diagrams, and/or combinations of blocks included in the flowchart illustrations and/or block diagrams, may be implemented by one or more computer-executable program code portions. These one or more computer-executable program code portions may be provided to a processor of a general purpose computer, special purpose computer, and/or some other programmable data processing apparatus in order to produce a particular machine, such that the one or more computer-executable program code portions, which execute via the processor of the computer and/or other programmable data processing apparatus, create mechanisms for implementing the steps and/or functions represented by the flowchart(s) and/or block diagram block(s).
The one or more computer-executable program code portions may be stored in a transitory and/or non-transitory computer-readable medium (e.g., a memory, etc.) that can direct, instruct, and/or cause a computer and/or other programmable data processing apparatus to function in a particular manner, such that the computer-executable program code portions stored in the computer-readable medium produce an article of manufacture including instruction mechanisms which implement the steps and/or functions specified in the flowchart(s) and/or block diagram block(s).
The one or more computer-executable program code portions may also be loaded onto a computer and/or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer and/or other programmable apparatus. In some embodiments, this produces a computer-implemented process such that the one or more computer-executable program code portions which execute on the computer and/or other programmable apparatus provide operational steps to implement the steps specified in the flowchart(s) and/or the functions specified in the block diagram block(s). Alternatively, computer-implemented steps may be combined with, and/or replaced with, operator- and/or human-implemented steps in order to carry out an embodiment of the present invention.
While certain exemplary embodiments have been described and shown in the accompanying drawings, it is to be understood that such embodiments are merely illustrative of and not restrictive on the broad invention, and that this invention not be limited to the specific constructions and arrangements shown and described, since various other changes, combinations, omissions, modifications and substitutions, in addition to those set forth in the above paragraphs, are possible. Those skilled in the art will appreciate that various adaptations, modifications, and combinations of the just described embodiments can be configured without departing from the scope and spirit of the invention. Therefore, it is to be understood that, within the scope of the appended claims, the invention may be practiced other than as specifically described herein.
Berggren, Anders, Trang, Linh, Nunes, Rui
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Dec 31 2013 | TRANG, LINH | Sony Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 032120 | /0674 | |
Jan 02 2014 | NUNES, RUI | Sony Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 032120 | /0674 | |
Jan 03 2014 | Sony Corporation | (assignment on the face of the patent) | / | |||
Jan 03 2014 | Sony Mobile Communications Inc. | (assignment on the face of the patent) | / | |||
Jan 03 2014 | BERGGREN, ANDERS | Sony Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 032120 | /0674 | |
Apr 14 2016 | Sony Corporation | SONY MOBILE COMMUNICATIONS INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 038542 | /0224 |
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